More that You Can Do With Scales

More that You Can Do With ScalesDates, log, labels, breaks, color palettesPeter Higgins2021-10-301 / 3

Customizing Plot ScalesDate scales can be tricky
you can use scale_(x|y)_date()
then you can set date_breaks to an interval
and format the dates with date_labels. These have specific codes
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Demonstration 1: Select Variables, then Violin Plot

mdeaths

# A tibble: 72 × 5
   deaths month  year   day date      
    <dbl> <int> <dbl> <dbl> <date>    
 1   2134     1  1974     1 1974-01-01
 2   1863     2  1974     1 1974-02-01
 3   1877     3  1974     1 1974-03-01
 4   1877     4  1974     1 1974-04-01
 5   1492     5  1974     1 1974-05-01
 6   1249     6  1974     1 1974-06-01
 7   1280     7  1974     1 1974-07-01
 8   1131     8  1974     1 1974-08-01
 9   1209     9  1974     1 1974-09-01
10   1492    10  1974     1 1974-10-01
# … with 62 more rows

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Demonstration 1: Select Variables, then Violin Plot

mdeaths %>%
  ggplot(aes(x = date, y = deaths))

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Demonstration 1: Select Variables, then Violin Plot

mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line()

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Demonstration 1: Select Variables, then Violin Plot

mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
  theme_linedraw(base_size = 14)

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Demonstration 1: Select Variables, then Violin Plot

mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
  theme_linedraw(base_size = 14) +
  scale_x_date(date_breaks = "6 months")

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Demonstration 1: Select Variables, then Violin Plot

mdeaths %>%
  ggplot(aes(x = date, y = deaths)) +
  geom_line() +
  theme_linedraw(base_size = 14) +
  scale_x_date(date_breaks = "6 months") +
  scale_x_date(date_labels = '%b\n%Y')

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Date Formatting Codes

Format Example
Unit
Code


Mon
abbreviated day text
%a

Monday
full day text
%A

09
digit day of month
%d

3 (0-6)
digit day of week (Sunday = 0)
%w

24 (0-53)
digit week of year (0-53) - Sunday start
%U

44 (0-53)
digit week of year (0-53) - Monday start
%W

Oct
Abbreviated Month
%b

October
Full Month
%B

10
Digit Month
%m

12
2-Digit Year
%y

2012
4-Digit Year
%Y

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Format Example	Unit	Code
Mon	abbreviated day text	%a
Monday	full day text	%A
09	digit day of month	%d
3 (0-6)	digit day of week (Sunday = 0)	%w
24 (0-53)	digit week of year (0-53) - Sunday start	%U
44 (0-53)	digit week of year (0-53) - Monday start	%W
Oct	Abbreviated Month	%b
October	Full Month	%B
10	Digit Month	%m
12	2-Digit Year	%y
2012	4-Digit Year	%Y

More that You Can Do With Scales

Dates, log, labels, breaks, color palettes

Peter Higgins

2021-10-30

Customizing Plot Scales

Date Formatting Codes

Customizing Plot Scales

Help